Which of the following distinguishes syphilis from yaws?
A. Syphilis has a primary, secondary, and tertiary stages.
B. Syphilis is caused by a spirochete.
C. Syphilis is treated with antibiotics.
D. Syphilis is sexually transmitted.
E. Syphilis is a slow and progressive disease.
Answer: D
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If you wished to study the SOS response in Escherichia coli, which of the following experimental procedures could be used?
A. Inactivate genes that encode DNA polymerases. B. Expose cells to ionizing radiation for 10 minutes. C. Transfer log phase cells from complete medium to thymine minimal medium. D. Expose cells to nonionizing radiation for 20 minutes. E. All of the choices are correct.
The breakdown of proteins in animals results in what type of waste product(s)?
What will be an ideal response?
The last step of B cell activation is__________.
What will be an ideal response?
Ca+ ion channels are found:
A. only at the axon terminal membrane. B. only along the terminal ends of the dendrites. C. throughout the length of the axon. D. throughout the entire neuron. E. only at the axon hillcock.